O.K. this might sound like a stupid question but I have to ask. I've only worked on a hand ful of walk in freezers, and i guess i never paid much attention to the drain lines before. A friend showed me his walk in with overflowed frozen drain pan and losts of ice on the floor below. obvious drainage issues. Than I see the black drain line heater wraped around the outside of a 3/4 PVC drain that makes an easy short run straight out the back.
my questions are, the drain line heater is supposed to go inside the drain line right? and is that ok to put it inside of a PVC drain line or should I make a copper one? Third, is the drain heater supposed to be hot all the time or just in defrost? what about drain pan heaters, are those hot all the time or just in defrost?
It's a Larkin evap farley new in good shape, I didn't see the defrost timer any where outside, is it possible that it's on the side of the evap with all the other electricals?
Any thoughts or something I'm not seeing please feel free.